Winding and twisting machine



April 1932- i A. SCHULTZ LBSSAWL WINDING AND TWISTING MACHINE Filed April 17, 1930 Z5 35 [I I1 lm/gwrom Augus/z/s jchu/fz AZQRNQW Patented A r. 26, 1932 UNITED STATES AUGUSTUS SCHULTZ, F ALBANY, NEW YORK WINDING AND, TWIS'I'ING MACHINE Application filed April 17,

My invention relates to machines for winding and twisting yarns and particularly to improvements in such machines whereby the strands are laid together with extreme regularity and whereby the same machine is .LD ordinary practice to provide a revoluble table or wing carrying a plurality'of bobbins from which individual strands are conducted up \vardly through suitable guides and twisted together to form the yarn or thread. In such a device, the tensionv on the separate strands is not uniform and the resulting yarn is not only uneven but lacking in strength. Where the tension of one strand exceeds the tension on the others, this strand is not twisted to the same degree as the others but goes through more or less straight to the cop forming mechanism and the less tensioned strands are twisted about it. This produces a very weak yarn in which most of the stress is sustained by the single strand with the initial high tension and very little by the other strands until after considerable stretch or elongation of the high stressed strand. With the ordinary machine it is particularly diflicult if not impossible to obtain a hard twisted yarn that is satisfactory.

One of the objects of my invention, therefore, is to provide a. machine for twisting yarns in which the strands will be laid to gether with uniform tension. Another object is to provide a machine which will twist a yarn having a uniform number of twists in each like unit of length. A still further object is to provide a machine which can be readily adjusted to produce either a hard or soft twisted yarn.

With these and other objects in view which will be apparent as the description proceeds, my invention includes the novel elements and the combinations and arrangements thereof described below and illustrated in the accompanying drawings in whichig. l is an elevation View of a twisting machine showing the features of my invention;

1930. Serial No. 444,978.

Fig. 2 drive;

Fig. 3 is an elevation view, partially in section, of a detail of my machine; and

Fig. 4 is a detail of the strand tension regulating means.

Referring to the drawings, 1 is a frame carrying a main shaft, 2, driven from a suitable source of power (not shown), and driving gear, 3, keyed thereto. An idler, 4, supported. in the bearing yoke, 5, which is rotatable about shaft, 2, as an axis, is meshed with gear, 3, and with gear, 6, on driven shaft, 7. A pulley, 8, is secured to shaft, 7, and drives the pulley, 9, by means of belt, 10. The pulley, 9, is secured to the vertical shaft, 11, which carries the table or wing, 13. The table, 13, carries a plurality of vertical spindles, 14, on which are mounted the bobbins 15. Above the bobbins and carried by shaft, 11, is a second table, 16, upon which are mounted tension regulating elements, 17, one for each of the bobbins. This table also carries eyelet-s, 18 and 19, which guide the strands, 20, to and from the tensioning elements. Above the tensioning elements and carried by the shaft, 11, is a guiding and spacing element, 21, preferably frusto-conical, and having a cylindrical base portion, 22, provided at the bottom with an enlarged edge or head, 23. The portion, 22, is provided, about its periphery, with vertically extending recesses, 24:, one for each bobbin, and

is a plan view of the variable speed .which are adapted to receive the individual strands, 20. Surrounding the cylindrical portion, 22, is the loosely fitted ring, 25, supported by the bead, 23, and which functions to retain the individual strands within the recesses, 24.

Mounted on top of the frame in suitable bearings, not shown, is a spindle, 26, driven by belt, 27 running over pulley, 28, on the shaft, 2. Associated with the spindle, 26. is the usual cop-forming or trumpet-building mechanism, represented generally by the numeral, 29, Which winds the yarn as it passes from the twisting mechanism. \Vhether the yarn is hard twisted or soft twisted obviously depends upon the speed ratio of shaft, 11, and spindle, 26, and I have provided means whereby this ratio maybe readily changed.

Referring particularly to Fig. 1, it will be noted that the idler, 4, and the bearing yoke, 5, therefor may be revolved about the shaft, 2, to the positions, 4 and 5, respectively, and that the idler, 4, is always in mesh with the driving gear, 3. The gear, 6, on shaft, 7, is readily removable by loosening the nut, 30, (see Fig. 2), and a larger or smaller gear may be substituted therefor. The idler, 4, is then revolved about shaft, 2, until it is properly meshed with the gear on'shaft, 7, and the yoke is clamped in, this position by means of the wing nut, 31, coacting with the circularly slotted element, 32, fixed to frame 1.

Since the spindle, 26, is driven at constant speed from shaft, 2,- a very smallgear substituted for gear, 6, will drive the table, 13, at comparatively high speed and'a hard, closely twist-edyarn will be produced. On the other hand, if a very large gear is substituted for gear, 6, the table, 13, will be driven at comparatively slow speed .and a loosely twisted yarn will be produced.

-A strand tensioning device, represented generally by the numeral, 17, is shown in detail in'Fig. 4, and no claim is made to this device per se. It comprises separate metal disks, 35 and 36, rotatably mounted on a shaft, 37 carried by a suitable support, 38, at one side thereof. The arm runs between these disks which are yieldingly held together to compress the yarn by spring, 39, and the degree of compression mav be varied by means of the adjusting nut, 40, secured in adj usted position by the lock nut, 41.

In operation, the tension on the various strands is adjusted by the devices, 17, and the various strands are maintained in uniformly spaced relation by the frusto-conical guiding and spacing means. The strands lie along the conical surface, 21, and the actual twisting occurs substantially at the vertex of this surface which is on the axis of revolution of the bobbins. The guide, 33, is provided with an eyelet, 34, on the axis of the conical guiding element so that the twisting'always takes place on this axis. lVhile the adjustment of the tension on the various strands is manually made and therefore, theoretically will not be absolutely uniform, it will be understood that it may be made substantially uniform.

It is to be understood that the words which I have used in describin my invention are words of description ancI not of limitation, that the drawings are more or less diagrammatic, and that changes within the purview of the appended claims may be made without departing from the true scope and spirit of my invention in its broader aspects.

What I claim is 1. In a yarn twisting device, a central shaft, a table mounted thereon, a plurality of yarn bobbins mounted on said table, means arranged above said table and rotatable by said shaft for guiding the various strands of yarn from said bobbins to a definite point before twisting, said means comprising a head provided with recesses in which the respective strands are received, a loosely fitted ring surrounding the recessed portion of said head, and means for rotating said shaft.

2. In a yarn twisting device, a central shaft, 9. table mounted thereon, a plurality of yarn bobbins mounted on said table, means arranged above said table and rotatable by said shaft for guiding the various strands of yarn from said bobbins to a definite point before twisting, said means comprising a head provided at its lower portion with a bead, the periphery of said head being provided with recesses in which the respective strands are received, a ring loosely fitted about the a recessed portion of said head and supported on said bead, and means for rotating said shaft.

AUGUSTUS SCHULTZ. 

